404 



PTER0VU3 SCAPrLATTJS. 



spaced, i'-i' and i. and i, generally more broadly separated than 

 i'-i^ and ij-i,^ ; posterior ledges of upper incisors quite or very nearly 

 obsolete : lowor incisors subterete, i^ once and a half to twice the 

 bulk of i,. Ui)per canines unusually lon<i: and slender, tips iiu'.tc 

 or nearly reaching lower margin of mandible, when the jaws are 

 closed ; profilo of crown alightly recurved or nearly straight : 



Fig. 18. — ricrr-pns scapulatiis, (i . Austi-alia. Ko. 62.6.4.2. \. 



cino'uliini very narrow; vertical groove on front face extremely 

 broad and deep, terminating a little above tip of tooth. ]j0wer 

 (•aniues long and slender, tips level with base of upper third of 

 premaxillae ; crown distinctly recurved in profile, much more 

 strongly so (hook like) in front view, this latter to a greater degree 

 than in any other species of the genus ; cingulum very narrow. 

 Cheek-teeth above and below small and excessively narrow, pre- 

 molars more spaced than usual, p^ spiculitorm, deciduous, p, twice 

 to three times the bulk of i^, subequal to m„, generally situated 

 close Lo lower canine and separated by wide diastema from p,. 



